查询词典 condensation

Dihydrojasmone was synthesized from2-hexyl-5-methyl-1,2-oxaborolane,prepared frommethyl vinyl ketone and hexene,via the homologationwith 〓 followed by PCC oxidation and intra-molecular condensation.In stead of the oxidation ofthe C-B bond of 1,2-oxaborolane,fluoride inducedhalogenation of 2-alkoxy-1,2-oxaborolane was found togive 3-halopropanol.

硼氢化甲基乙烯基酮和已烯得到的2-已基-5-甲基-1，2-氧硼杂环戊烷与〓反应，再经PCC氧化，分子内缩合得到二氢茉莉酮。1，2-氧硼杂环戊烷的C-B键除氧化断裂之外，也能够在〓或KF作用下卤化断裂成碳卤键。

I am assuming that the reader is familiar with the difference between 'Contrails'; that is condensation trails left behind highflying aircraft, consisting of water vapour that fades away within a few minutes, and what has become known as 'Chemtrails', also from highflying aircraft, that persist across the sky for some considerable time and evolve into wispy longitudinal clouds.

我假设读者熟悉的区别' contrails '，这就是凝结尾，留下highflying飞机，其中包括水蒸汽即褪色的距离内数分钟，并已逐渐称作' chemtrails '，也从highflying飞机，即坚持跨越天空，为相当长的一段时间，并演变成wispy纵云。

By Albert Shine I am assuming that the reader is familiar with the difference between 'Contrails'; that is condensation trails left behind highflying aircraft, consisting of water vapour that fades away within a few minutes, and what has become known as 'Chemtrails', also from highflying aircraft, that persist across the sky for some considerable time and evolve into wispy longitudinal clouds.

由何俊仁照耀我假设读者熟悉的区别' contrails '；这是凝结尾遗留下来的highflying飞机，构成的水蒸汽即褪色消失几分钟，什麼已成为被称为' chemtrails '，也从highflying飞机，即坚持跨越天空，为相当长的一段时间，并演变成wispy纵向的云彩。

Results Apoptotic cells were found among normal dentate hilus cells and CA1 cells. Chromatin condensation and clumping could be seen in the apoptotic nuclei. The shrinkage of the nucleus was shown by foldings and whorls of the nuclear membrane. At late stage of apoptosis, the nuclear membranes could be broken.

结果 电镜下，实验组大鼠海马齿状回门区和CA1区内可见散在的凋亡神经元，凋亡神经元主要表现为核周染色体的聚集和凝结成块，其核膜表现为皱缩和扭曲，在晚期凋亡的神经元有时可见核膜破裂。

Common condensation compounds appear hooped, with the size of 50~300nm.

常用的多价阳离子包括阳离子聚合物，蛋白质，高价无机离子等。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

Hydrotalcites belong to a family of anionic clays. Because of its special composition and structure, hydrotalcites are shown highly activity and selectivity in catalytic reaction, such as hydrogenization, polymerization, and condensation.

水滑石为一类阴离子型层状粘土，由于其组成和结构的特殊性，使其在催化加氢、聚合、缩合及醇类转化等有机反应中表现出高的催化活性和选择性，同时，它们还可以作为吸附剂、阻燃剂和热稳定剂等。

The concentration of liquid hydrocarbon B is 10%.the dosage of hydrophobe is 15%~20%. The condensation and used environment of defoaming agent were studied ,the experiments show that self-made defoamer can be the same with many bubbly systems,such as anion, zwitterions, Nonionic bubbly liquid et al.and it can be used from acidity to alkalescence conditions.the fitting dosage is 9‰～10‰to polyester,6‰to siloxane-polyester copolymer,and 3‰to mulriple defoamer.

对消泡剂的投加浓度、适用环境等作了相关应用研究，结论为：消泡剂适用的起泡体系较广，阴离子、两性离子、非离子型起泡液均可使用；适用PH值范围可从酸性至弱碱性，适宜加入量为(以占起泡体系的体积分数计)：聚醚酯消泡剂9-10‰，有机硅改性聚醚酯消泡剂6‰，复配消泡剂3‰。

Surface heating provides temperature maintenance for vicious products and condensation control for hydroscopic granular or air-borne media.

表面加热系统可以维持容器温度，从而防止内部液体或气体介质凝固。

Hygrothermal performance of building components and building elements - Internal surface temperature to avoid critical surface humidity and interstitial condensation - Calculation methods.

NF P50-766-2001 建筑元部件的湿热性能。防止临界表面潮湿和填隙式冷凝的内表面温度。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。